Fire extinguisher



J. S. NELSON June 5, 1934.

FIRE EXTINGUISHER Filed April 7, 1932 WWW Patented June 5, 1934 I.

UNITED STATES PATENT OFFICE FIRE EXTINGUISHER Julius S. Nelson, SanJose, Calif.

Application April 7, 1932, Serial No. 603,806

3' 4 Claims (01. ice-#26) The present invention relates particularly toSurrounding the pin 7 and passing through the the grenade type of fireextinguisher wherein plate 1 are holes 9. the grenade is shattered bymeans rendered At 10 is shown a disc of fusible metal set operative byheat generated by the fire to be in recess 6 and secured in position bylow temc extinguished. perature solder at 11. Mounted upon the upper 60,

In known devices of this type the grenades side of the disc are rods 12,one passing are mounted upon brackets or supports which through eachhole 9, the several rods supporting are in turn mounted upon the wall ofthe room a horizontally disposed bar as 13. in which they are to beused, and their use is A metal housing is shown at 14, this housinghighly objectionable because they do not lend being open at its lowerend where it seats upon 55 themselves readily to the furnishing anddecorathe seat 5 formed in plate 1. Within the contive schemes of theroom. And, furthermore, tainer or housing is a glass grenade resting themeans for mounting the grenades is of such upon the bar 13 and supportedin a vertical poa nature that they cannot be readily placed sition bythe walls of the housing. A leaf spring .15. where the releasingmechanism will be most is shown at 16 bearing against the grenade and 70quickly acted upon by heat generated by a fire the top of the housing14. in the room, nor where the liquid released can In positioning thisdevice the parts are first be sprayed in the most efficient manner.assembled as above described, and the housing It is, therefore, anobject of the invention to 14 is then thrust upwardly through an opening20 provide a device of the character indicated so as 1'7 formed in theceiling 18 of the room, in i5,

constructed that it may be readily positioned in which position it isheld securely by fastenings 3. any room without noticeably interferingwith If a fire occurs in the room in which the its decorative scheme,and capable of being device is placed the excessive heat generatedworked in and utilized as an element in said thereby first becomesmanifest along the ceil- .25. scheme. ing level, and consequently itwill act almost 39 It is another object of the invention to provideimmediately upon the solder 11, melting the a device of the characterindicated so placed as same and permitting the bar 13 to drop. When tobe promptly acted upon when the temperthe supporting bar 13 is releasedthe spring ature of the air in the room rises beyond a pre- 16 throwsthe grenade down suddenly, causing determined point, and so disposed asto spray it to break upon the pin '7, whereupon its con- 85,

the fire extinguishing liquid most effectively. tents is released andsprayed out into the room It is still another object to provide a devicethrough the perforations 2. of the character indicated so constructedand It may be readily understood from the forearranged as to obviate thenecessity of providgoing that I have provided a highly eflicient and 5.ing hinged parts such as hammers etc., and one practical device, and thesole evidence of its 9Q 49 In the drawing: It is to be understood, ofcourse, that while 95,

that will be economical to manufacture, of few presence in a room is theornamental plate 1. parts, simple in form and construction, light in Itoccupies otherwise unused space between the weight, strong, durable, andhighly efficient in ceiling joists, has no swinging parts to get out itspractical application. of order, and is positive in action.

Figure 1 is a sectional view through a device I have herein shown anddescribed but one spe embodying my invention in an operative cificembodiment of the invention, changes in position. form, construction,and method of assembly and Figure 2 is a bottom plan view of the same,operation may be made within the scope of the 4%? partly broken away.appended claims.

In the particular embodiment of the inven- I claim: tion hereindisclosed, I show at 1 an ornamental 1. In combination, an aperturedplate, an up- Dlate perforated as at 2 and rigidly mounted on standingbreaker element mounted on the plate, the ce of a T0011! as all Thisplate has container supporting means disposed in an elean annular offset4 formed therein to form a vated position relative to the plate andhaving 19,

seat 5, and the perforations 2 are disposed within parts extendingdownwardly through the plate, the field defi d y the Said Offset n t e08 low temperature fusible means for securing the ter of the plate isformed a sha ow recess 6, support to the plate, a frangible container ofr and upon the center of the part 6 is disposed fire extinguishing fluidmounted on the supportan up t n in pin 7 with a conical head as 8. ingmeans, and means for throwing the con- L10 tainer upon the breakerelement upon the breaking down of the fusible means.

2. In a device of the character described, an apertured plate having anupstanding pin mounted thereon, an element mounted upon the under sidethereof and secured thereto by means fusible at a low temperature, saidelement having parts extending upwardly through certain apertures in theplate, supporting means mounted on said plate and disposed in elevatedrelation to the plate, a frangible container of fire extinguishing fluidmounted on said supporting means, and means for throwing the containerforcibly against the pin to break the, same upon breaking down of thefusible means.

3. In a device of the character described, a housing having an aperturedend, an inwardly directed breaker element mounted on said end, afrangible container of fire extinguishing fluid disposed in the housing,releasable supporting means for the container disposed in the housingand passing through said end and secured to the outer side thereof bymeans fusible at a given low temperature, and resilient means insertedbetween the other end of the housing and the container whereby to throwthe container against the breaker element when the supporting element isreleased.

4. In a device of the class described, an annular plate having aperturestherein and provided with spaced peripherally disposed means forsecuring the same to a horizontal support, heat releasable means fornormally supporting a frangible container of fire extinguishing materialin elevated relation to the top of said plate, a breaker element carriedby said plate, and means for throwing said container upon the breakerelement to break the same when released to permit the passage of thefire extinguishing material through the openings.

JULIUS SIG. NELSON.

